docs: def addEntity(self, model, number, customFieldFormatters=None):
          """
          Add an order for the generation of $number records for $entity.
  
          :param model: mixed A Django Model classname, or a faker.orm.django.EntityPopulator instance
          :type model: Model
          :param number: int The number of entities to populate
          :type number: integer
          :param customFieldFormatters: optional dict with field as key and callable as value
          :type customFieldFormatters: dict or None
          """
          if not isinstance(model, ModelPopulator):
              model = ModelPopulator(model)
  
          model.fieldFormatters = model.guessFieldFormatters( self.generator )
          if customFieldFormatters:
              model.fieldFormatters.update(customFieldFormatters)
  
          klass = model.model
          self.entities[klass] = model
          self.quantities[klass] = number
          self.orders.append(klass)